A hex socket is a type of fastener that features a six-sided recess designed to accommodate a corresponding hexagonal tool, often called a hex key or Allen wrench. This design allows for better torque application and grip, making it easier to tighten or loosen screws and bolts in various applications, from furniture assembly to automotive repairs. Hex sockets are commonly found in many tools and machinery, providing a secure fit that minimizes the risk of stripping the fastener. They are available in various sizes to fit different fasteners, and their versatility makes them popular in both professional and DIY settings.